ops.c

针对linux休眠suspend显卡状态保存恢复的一个办法

        break;
    case 3:                     /* register to register */
        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
            u32 *destreg,*srcreg;

            destreg = DECODE_RM_LONG_REGISTER(rh);
            DECODE_PRINTF(",");
            srcreg = DECODE_RM_LONG_REGISTER(rl);
            DECODE_PRINTF("\n");
            TRACE_AND_STEP();
            *destreg = add_long(*destreg, *srcreg);
        } else {
            u16 *destreg,*srcreg;

            destreg = DECODE_RM_WORD_REGISTER(rh);
            DECODE_PRINTF(",");
            srcreg = DECODE_RM_WORD_REGISTER(rl);
            DECODE_PRINTF("\n");
            TRACE_AND_STEP();
            *destreg = add_word(*destreg, *srcreg);
        }
        break;
    }
    DECODE_CLEAR_SEGOVR();
    END_OF_INSTR();
}

/****************************************************************************
REMARKS:
Handles opcode 0x04
****************************************************************************/
static void x86emuOp_add_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
{
    u8 srcval;

    START_OF_INSTR();
    DECODE_PRINTF("ADD\tAL,");
    srcval = fetch_byte_imm();
    DECODE_PRINTF2("%x\n", srcval);
    TRACE_AND_STEP();
    M.x86.R_AL = add_byte(M.x86.R_AL, srcval);
    DECODE_CLEAR_SEGOVR();
    END_OF_INSTR();
}

/****************************************************************************
REMARKS:
Handles opcode 0x05
****************************************************************************/
static void x86emuOp_add_word_AX_IMM(u8 X86EMU_UNUSED(op1))
{
    u32 srcval;

    START_OF_INSTR();
    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
        DECODE_PRINTF("ADD\tEAX,");
        srcval = fetch_long_imm();
    } else {
        DECODE_PRINTF("ADD\tAX,");
        srcval = fetch_word_imm();
    }
    DECODE_PRINTF2("%x\n", srcval);
    TRACE_AND_STEP();
    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
        M.x86.R_EAX = add_long(M.x86.R_EAX, srcval);
    } else {
        M.x86.R_AX = add_word(M.x86.R_AX, (u16)srcval);
    }
    DECODE_CLEAR_SEGOVR();
    END_OF_INSTR();
}

/****************************************************************************
REMARKS:
Handles opcode 0x06
****************************************************************************/
static void x86emuOp_push_ES(u8 X86EMU_UNUSED(op1))
{
    START_OF_INSTR();
    DECODE_PRINTF("PUSH\tES\n");
    TRACE_AND_STEP();
    push_word(M.x86.R_ES);
    DECODE_CLEAR_SEGOVR();
    END_OF_INSTR();
}

/****************************************************************************
REMARKS:
Handles opcode 0x07
****************************************************************************/
static void x86emuOp_pop_ES(u8 X86EMU_UNUSED(op1))
{
    START_OF_INSTR();
    DECODE_PRINTF("POP\tES\n");
    TRACE_AND_STEP();
    M.x86.R_ES = pop_word();
    DECODE_CLEAR_SEGOVR();
    END_OF_INSTR();
}

/****************************************************************************
REMARKS:
Handles opcode 0x08
****************************************************************************/
static void x86emuOp_or_byte_RM_R(u8 X86EMU_UNUSED(op1))
{
    int mod, rl, rh;
    u8 *destreg, *srcreg;
    uint destoffset;
    u8 destval;

    START_OF_INSTR();
    DECODE_PRINTF("OR\t");
    FETCH_DECODE_MODRM(mod, rh, rl);
    switch (mod) {
    case 0:
        destoffset = decode_rm00_address(rl);
        DECODE_PRINTF(",");
        destval = fetch_data_byte(destoffset);
        srcreg = DECODE_RM_BYTE_REGISTER(rh);
        DECODE_PRINTF("\n");
        TRACE_AND_STEP();
        destval = or_byte(destval, *srcreg);
        store_data_byte(destoffset, destval);
        break;
    case 1:
        destoffset = decode_rm01_address(rl);
        DECODE_PRINTF(",");
        destval = fetch_data_byte(destoffset);
        srcreg = DECODE_RM_BYTE_REGISTER(rh);
        DECODE_PRINTF("\n");
        TRACE_AND_STEP();
        destval = or_byte(destval, *srcreg);
        store_data_byte(destoffset, destval);
        break;
    case 2:
        destoffset = decode_rm10_address(rl);
        DECODE_PRINTF(",");
        destval = fetch_data_byte(destoffset);
        srcreg = DECODE_RM_BYTE_REGISTER(rh);
        DECODE_PRINTF("\n");
        TRACE_AND_STEP();
        destval = or_byte(destval, *srcreg);
        store_data_byte(destoffset, destval);
        break;
    case 3:                     /* register to register */
        destreg = DECODE_RM_BYTE_REGISTER(rl);
        DECODE_PRINTF(",");
        srcreg = DECODE_RM_BYTE_REGISTER(rh);
        DECODE_PRINTF("\n");
        TRACE_AND_STEP();
        *destreg = or_byte(*destreg, *srcreg);
        break;
    }
    DECODE_CLEAR_SEGOVR();
    END_OF_INSTR();
}

/****************************************************************************
REMARKS:
Handles opcode 0x09
****************************************************************************/
static void x86emuOp_or_word_RM_R(u8 X86EMU_UNUSED(op1))
{
    int mod, rl, rh;
    uint destoffset;

    START_OF_INSTR();
    DECODE_PRINTF("OR\t");
    FETCH_DECODE_MODRM(mod, rh, rl);
    switch (mod) {
    case 0:
        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
            u32 destval;
            u32 *srcreg;

            destoffset = decode_rm00_address(rl);
            DECODE_PRINTF(",");
            destval = fetch_data_long(destoffset);
            srcreg = DECODE_RM_LONG_REGISTER(rh);
            DECODE_PRINTF("\n");
            TRACE_AND_STEP();
            destval = or_long(destval, *srcreg);
            store_data_long(destoffset, destval);
        } else {
            u16 destval;
            u16 *srcreg;

            destoffset = decode_rm00_address(rl);
            DECODE_PRINTF(",");
            destval = fetch_data_word(destoffset);
            srcreg = DECODE_RM_WORD_REGISTER(rh);
            DECODE_PRINTF("\n");
            TRACE_AND_STEP();
            destval = or_word(destval, *srcreg);
            store_data_word(destoffset, destval);
        }
        break;
    case 1:
        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
            u32 destval;
            u32 *srcreg;

            destoffset = decode_rm01_address(rl);
            DECODE_PRINTF(",");
            destval = fetch_data_long(destoffset);
            srcreg = DECODE_RM_LONG_REGISTER(rh);
            DECODE_PRINTF("\n");
            TRACE_AND_STEP();
            destval = or_long(destval, *srcreg);
            store_data_long(destoffset, destval);
        } else {
            u16 destval;
            u16 *srcreg;

            destoffset = decode_rm01_address(rl);
            DECODE_PRINTF(",");
            destval = fetch_data_word(destoffset);
            srcreg = DECODE_RM_WORD_REGISTER(rh);
            DECODE_PRINTF("\n");
            TRACE_AND_STEP();
            destval = or_word(destval, *srcreg);
            store_data_word(destoffset, destval);
        }
        break;
    case 2:
        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
            u32 destval;
            u32 *srcreg;

            destoffset = decode_rm10_address(rl);
            DECODE_PRINTF(",");
            destval = fetch_data_long(destoffset);
            srcreg = DECODE_RM_LONG_REGISTER(rh);
            DECODE_PRINTF("\n");
            TRACE_AND_STEP();
            destval = or_long(destval, *srcreg);
            store_data_long(destoffset, destval);
        } else {
            u16 destval;
            u16 *srcreg;

            destoffset = decode_rm10_address(rl);
            DECODE_PRINTF(",");
            destval = fetch_data_word(destoffset);
            srcreg = DECODE_RM_WORD_REGISTER(rh);
            DECODE_PRINTF("\n");
            TRACE_AND_STEP();
            destval = or_word(destval, *srcreg);
            store_data_word(destoffset, destval);
        }
        break;
    case 3:                     /* register to register */
        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
            u32 *destreg,*srcreg;

            destreg = DECODE_RM_LONG_REGISTER(rl);
            DECODE_PRINTF(",");
            srcreg = DECODE_RM_LONG_REGISTER(rh);
            DECODE_PRINTF("\n");
            TRACE_AND_STEP();
            *destreg = or_long(*destreg, *srcreg);
        } else {
            u16 *destreg,*srcreg;

            destreg = DECODE_RM_WORD_REGISTER(rl);
            DECODE_PRINTF(",");
            srcreg = DECODE_RM_WORD_REGISTER(rh);
            DECODE_PRINTF("\n");
            TRACE_AND_STEP();
            *destreg = or_word(*destreg, *srcreg);
        }
        break;
    }
    DECODE_CLEAR_SEGOVR();
    END_OF_INSTR();
}

/****************************************************************************
REMARKS:
Handles opcode 0x0a
****************************************************************************/
static void x86emuOp_or_byte_R_RM(u8 X86EMU_UNUSED(op1))
{
    int mod, rl, rh;
    u8 *destreg, *srcreg;
    uint srcoffset;
    u8 srcval;

    START_OF_INSTR();
    DECODE_PRINTF("OR\t");
    FETCH_DECODE_MODRM(mod, rh, rl);
    switch (mod) {
    case 0:
        destreg = DECODE_RM_BYTE_REGISTER(rh);
        DECODE_PRINTF(",");
        srcoffset = decode_rm00_address(rl);
        srcval = fetch_data_byte(srcoffset);
        DECODE_PRINTF("\n");
        TRACE_AND_STEP();
        *destreg = or_byte(*destreg, srcval);
        break;
    case 1:
        destreg = DECODE_RM_BYTE_REGISTER(rh);
        DECODE_PRINTF(",");
        srcoffset = decode_rm01_address(rl);
        srcval = fetch_data_byte(srcoffset);
        DECODE_PRINTF("\n");
        TRACE_AND_STEP();
        *destreg = or_byte(*destreg, srcval);
        break;
    case 2:
        destreg = DECODE_RM_BYTE_REGISTER(rh);
        DECODE_PRINTF(",");
        srcoffset = decode_rm10_address(rl);
        srcval = fetch_data_byte(srcoffset);
        DECODE_PRINTF("\n");
        TRACE_AND_STEP();
        *destreg = or_byte(*destreg, srcval);
        break;
    case 3:                     /* register to register */
        destreg = DECODE_RM_BYTE_REGISTER(rh);
        DECODE_PRINTF(",");
        srcreg = DECODE_RM_BYTE_REGISTER(rl);
        DECODE_PRINTF("\n");
        TRACE_AND_STEP();
        *destreg = or_byte(*destreg, *srcreg);
        break;
    }
    DECODE_CLEAR_SEGOVR();
    END_OF_INSTR();
}

/****************************************************************************
REMARKS:
Handles opcode 0x0b
****************************************************************************/
static void x86emuOp_or_word_R_RM(u8 X86EMU_UNUSED(op1))
{
    int mod, rl, rh;
    uint srcoffset;

    START_OF_INSTR();
    DECODE_PRINTF("OR\t");
    FETCH_DECODE_MODRM(mod, rh, rl);
    switch (mod) {
    case 0:
        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
            u32 *destreg;
            u32 srcval;

            destreg = DECODE_RM_LONG_REGISTER(rh);
            DECODE_PRINTF(",");
            srcoffset = decode_rm00_address(rl);
            srcval = fetch_data_long(srcoffset);
            DECODE_PRINTF("\n");
            TRACE_AND_STEP();
            *destreg = or_long(*destreg, srcval);
        } else {
            u16 *destreg;
            u16 srcval;

            destreg = DECODE_RM_WORD_REGISTER(rh);
            DECODE_PRINTF(",");
            srcoffset = decode_rm00_address(rl);
            srcval = fetch_data_word(srcoffset);
            DECODE_PRINTF("\n");
            TRACE_AND_STEP();
            *destreg = or_word(*destreg, srcval);
        }
        break;
    case 1:
        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
            u32 *destreg;
            u32 srcval;

            destreg = DECODE_RM_LONG_REGISTER(rh);
            DECODE_PRINTF(",");
            srcoffset = decode_rm01_address(rl);
            srcval = fetch_data_long(srcoffset);
            DECODE_PRINTF("\n");
            TRACE_AND_STEP();
            *destreg = or_long(*destreg, srcval);
        } else {
            u16 *destreg;
            u16 srcval;

            destreg = DECODE_RM_WORD_REGISTER(rh);
            DECODE_PRINTF(",");
            srcoffset = decode_rm01_address(rl);
            srcval = fetch_data_word(srcoffset);
            DECODE_PRINTF("\n");
            TRACE_AND_STEP();
            *destreg = or_word(*destreg, srcval);
        }
        break;
    case 2:
        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
            u32 *destreg;
            u32 srcval;

            destreg = DECODE_RM_LONG_REGISTER(rh);
            DECODE_PRINTF(",");
            srcoffset = decode_rm10_address(rl);
            srcval = fetch_data_long(srcoffset);
            DECODE_PRINTF("\n");
            TRACE_AND_STEP();
            *destreg = or_long(*destreg, srcval);
        } else {
            u16 *destreg;
            u16 srcval;

            destreg = DECODE_RM_WORD_REGISTER(rh);
            DECODE_PRINTF(",");
            srcoffset = decode_rm10_address(rl);
            srcval = fetch_data_word(srcoffset);